US3944627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenolysis of phenyl alkyl ketones and 1-phenylalkanols
Assignee: Shell USA Inc
•
Filing: 1974-05-23
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Granted: 1976-03-16
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Expires: 1994-05-23
Abstract
Abstract A process is disclosed for the production of alkylbenzenes by contacting phenyl alkyl ketones and/or 1-phenylalkanols with hydrogen in the presence of a supported noble metal of Group VIII at a temperature above about 175°C.
Inventors
- 👤 Cornelis W. A. Schram
- 👤 Freddy Wattimena
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:05
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; C; C07; C07C; C07C1/00; C07C1/20; C07C1/22; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
71 words
A process for the preparation of alkyl benzenes by contacting phenyl alkyl ketones and/or phenyl alkanols in which alkanols the alkanol moiety has at least two carbon atoms and the phenyl and hydroxyl groups are attached to the same carbon atom, with hydrogen at a temperature between about 175°C and about 450°C and with a supported noble metal of Group VIII of the Periodic Table of the Elements as a catalyst.
Claim 2
Dependent Claim
71 words
A process for the preparation of alkyl benzenes by contacting phenyl alkyl ketones and/or phenyl alkanols in which alkanols the alkanol moiety has at least two carbon atoms and the phenyl and hydroxyl groups are attached to the same carbon atom, with hydrogen at a temperature between about 175°C and about 450°C and with a supported noble metal of Group VIII of the Periodic Table of the Elements as a catalyst.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein the temperature is maintained at a value between about 250°C and about 375°C.
Claim 4
Dependent Claim
26 words
The process in claim 1 wherein the starting material is contacted with the catalyst at a pressure between about 2 bars and about 40 bar abs.
Claim 5
Dependent Claim
13 words
The process in claim 1 wherein an aluminium oxide is used as carrier.
Claim 6
Dependent Claim
26 words
The process in claim 1 wherein the noble metal is used in a percentage by weight between about 0.01 and about 1.5 based in the carrier.
Claim 7
Dependent Claim
26 words
The process in claim 5 wherein the noble metal is used in a percentage by weight between about 0.3 and about 1 based on the carrier.
Claim 8
Dependent Claim
13 words
The process in claim 5 wherein platinum is used as the noble metal.
Claim 9
Dependent Claim
21 words
The process in claim 1 wherein methyl phenyl ketone is used as the phenyl ketone and/or 1-phenylethanol as the phenyl alcohol.
References Cited (Backward Citations)
US3424806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-16 | 1979-09-15 | 1980-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-16 | 1983-09-15 | 1984-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-16 | 1987-09-15 | 1988-03-16 | $7700.00 | Window Closed / Lapsed |